Both clubs had appealed the sanctions but UEFA's Appeals Body ruled on Monday that the bans would be upheld. However, Fenerbahce, whose ban saw them excluded for a total of three seasons, with the third deferred for a probationary period of five years, have seen their sentence commuted to two seasons.

A UEFA statement read: "The UEFA Appeals Body today announced its decisions following the appeals lodged by Besiktas JK and Fenerbahce SK related to the two decisions passed by the UEFA Control and Disciplinary Body (CDB) on 21 and 22 June 2013, respectively.

"The UEFA Appeals Body carefully analysed the statements and documents submitted by Besiktas JK and Fenerbahce SK related to their specific cases, as well as the statements and documents submitted by the UEFA Disciplinary Inspectors appointed to each case, and reached the following decisions:

"Besiktas JK has had their appeal rejected. Consequently, Besiktas JK is not eligible to participate in the 2013-14 UEFA Europa League.

"Fenerbahce SK has had their appeal partially admitted. Consequently, Fenerbahce SK is excluded from participating in the next two UEFA club competitions for which they would qualify, including the 2013-14 UEFA Champions League."

The clubs are still able to appeal to the Court of Arbitration for Sport.